As an independent political consultant, Marc advises a roster of candidates and groups on messaging and organizational strategy. He played key roles building presidential campaigns for President Barack Obama and, most recently, as senior staff to Senator Bernie Sanders. He also worked as a policy adviser at the US Department of Energy during President Obama's first Administration. In between campaigns, he received his Juris Doctorate from Georgetown University Law Center and practiced as a white collar defense and investigations attorney at Latham & Watkins. A former Fulbright Scholar in Germany, he received his bachelor's degree from Brown University, where he graduated magna cum laude in philosophy and German studies.

His focuses on the adaptability and applicability of US electioneering techniques in East Asia, using Hong Kong as a case study. A key rationale is to assess whether techniques that stimulate higher voter turnout in US elections can also increase electoral participation in Hong Kong and generate dividends for Hong Kong's pursuit of democratization. A second rationale is to foster a mutual understanding of electioneering practices in culturally and geographically disparate contexts.